cnvd-2017-38519
Vulnerability from cnvd
Title
Linux kernel信息泄露漏洞（CNVD-2017-38519）
Description
Linux kernel是一种计算机操作系统内核，以C语言和汇编语言写成，符合POSIX标准，按GNU通用公共许可证发行。 Linux kernel 4.14.8及之前版本中存在信息泄露漏洞。该漏洞产生的原因是Linux kernel中的kernel/bpf/verifier.c未能正确处理指针数据类型和UNKNOWN_VALUE数据类型之间的states_equal比较。本地攻击者可利用该漏洞获取可能敏感的地址信息。
Severity
中
Patch Name
Linux kernel信息泄露漏洞（CNVD-2017-38519）的补丁
Patch Description
Linux kernel是一种计算机操作系统内核，以C语言和汇编语言写成，符合POSIX标准，按GNU通用公共许可证发行。 Linux kernel 4.14.8及之前版本中存在信息泄露漏洞。该漏洞产生的原因是Linux kernel中的kernel/bpf/verifier.c未能正确处理指针数据类型和UNKNOWN_VALUE数据类型之间的states_equal比较。本地攻击者可利用该漏洞获取可能敏感的地址信息。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。
Formal description

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://anonscm.debian.org/cgit/kernel/linux.git/commit/?h=stretch-security&id=ad775f6ff7eebb93eedc2f592bc974260e7757b0

Reference
https://www.debian.org/security/2017/dsa-4073
Impacted products
Name
Linux kernel <=4.14.8
Show details on source website

To clipboard 

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2017-17864"
    }
  },
  "description": "Linux kernel\u662f\u4e00\u79cd\u8ba1\u7b97\u673a\u64cd\u4f5c\u7cfb\u7edf\u5185\u6838\uff0c\u4ee5C\u8bed\u8a00\u548c\u6c47\u7f16\u8bed\u8a00\u5199\u6210\uff0c\u7b26\u5408POSIX\u6807\u51c6\uff0c\u6309GNU\u901a\u7528\u516c\u5171\u8bb8\u53ef\u8bc1\u53d1\u884c\u3002\r\n\r\nLinux kernel 4.14.8\u53ca\u4e4b\u524d\u7248\u672c\u4e2d\u5b58\u5728\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u4ea7\u751f\u7684\u539f\u56e0\u662fLinux kernel\u4e2d\u7684kernel/bpf/verifier.c\u672a\u80fd\u6b63\u786e\u5904\u7406\u6307\u9488\u6570\u636e\u7c7b\u578b\u548cUNKNOWN_VALUE\u6570\u636e\u7c7b\u578b\u4e4b\u95f4\u7684states_equal\u6bd4\u8f83\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u53d6\u53ef\u80fd\u654f\u611f\u7684\u5730\u5740\u4fe1\u606f\u3002",
  "discovererName": "Ben Hutchings \u003cben@decadent.org.uk\u003e",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://anonscm.debian.org/cgit/kernel/linux.git/commit/?h=stretch-security\u0026id=ad775f6ff7eebb93eedc2f592bc974260e7757b0",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2017-38519",
  "openTime": "2017-12-29",
  "patchDescription": "Linux kernel\u662f\u4e00\u79cd\u8ba1\u7b97\u673a\u64cd\u4f5c\u7cfb\u7edf\u5185\u6838\uff0c\u4ee5C\u8bed\u8a00\u548c\u6c47\u7f16\u8bed\u8a00\u5199\u6210\uff0c\u7b26\u5408POSIX\u6807\u51c6\uff0c\u6309GNU\u901a\u7528\u516c\u5171\u8bb8\u53ef\u8bc1\u53d1\u884c\u3002\r\n\r\nLinux kernel 4.14.8\u53ca\u4e4b\u524d\u7248\u672c\u4e2d\u5b58\u5728\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u4ea7\u751f\u7684\u539f\u56e0\u662fLinux kernel\u4e2d\u7684kernel/bpf/verifier.c\u672a\u80fd\u6b63\u786e\u5904\u7406\u6307\u9488\u6570\u636e\u7c7b\u578b\u548cUNKNOWN_VALUE\u6570\u636e\u7c7b\u578b\u4e4b\u95f4\u7684states_equal\u6bd4\u8f83\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u53d6\u53ef\u80fd\u654f\u611f\u7684\u5730\u5740\u4fe1\u606f\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Linux kernel\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\uff08CNVD-2017-38519\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Linux kernel \u003c=4.14.8"
  },
  "referenceLink": "https://www.debian.org/security/2017/dsa-4073",
  "serverity": "\u4e2d",
  "submitTime": "2017-12-25",
  "title": "Linux kernel\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\uff08CNVD-2017-38519\uff09"
}


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